/**
 * The raster-opacity property specifies an opacity in the range 0 (fully
 * transparent) to 1 (fully opaque.) to be applied to the entire raster.
 * Note that a color ramp may specify varying opacity, in which case the
 * opacities multiply - if raster-opacity is .5 and a pixel is assigned opacity
 * value 0.5 by a color ramp, then the pixel will be rendered with opacity
 * 0.25.
 */
* {
  raster-channels: auto;
  raster-opacity: 0.5;
}
